Like Kerbal Space Program? Then check out this book: Apollo. Or if you're more interested in the science behind spaceflight, you might like this: Fundamentals of Astrodynamics

KSP Parts

Title Package Author Cost Mass Crash Tolerance Drag Max Temp
c7-XRW C7 Flight Pack Version 2.15 C7Aerospace 500 0.1 15 0.6 3400